Printing machine



FIG. 1 is a front view of a printing machine showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a perspective view thereof.

The solid lines immediately adjacent to the unshaded areas represent the bounds of the claimed design, and the broken lines are included for the purpose of illustrating portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a printing machine, as shown and described. 